US Bridges

SR 79 NB over SR 0019

Fair

Allegheny County, Pennsylvania · I-79 NB over SR 19 · Structure no. 000000000000920

Built
1976
49 years old, rebuilt 2009
Condition
Fair
inspected August 2024
Type
Girder and Floorbeam System
Steel Continuous
Length
425 ft
3 main spans
Daily traffic
34,286
2024 count
Owner
State
State Highway Agency

About this bridge

SR 79 NB over SR 0019 is a steel continuous girder and floorbeam system carrying SR 79 NB over SR 0019 in Allegheny County, Pennsylvania. It was built in 1976 and reconstructed in 2009, so it is 49 years old, younger than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 34,286 vehicles a day, roughly 9% of them trucks, projected to reach 19,385 by 2032. The structure is 425 ft (129.5 m) long and 55 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR 79 NB
CrossesSR 0019
LocationI-79 NB over SR 19
RouteInterstate 79
CountyAllegheny County
StatePennsylvania
Coordinates40.65867, -80.09139
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48 US tons
Inventory rating28 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length425 ft (129.5 m)
Longest span165 ft (50.3 m)
Deck width55 ft (16.9 m)
Roadway width51 ft (15.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34,286 (2024)
Projected traffic19,385 by 2032
Trucks9%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$927,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 79 NB over SR 0019 built?

It was built in 1976, making it 49 years old in 2025. It was reconstructed in 2009.

What condition is SR 79 NB over SR 0019 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2024.

How much traffic does SR 79 NB over SR 0019 carry?

About 34,286 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is SR 79 NB over SR 0019?

The structure is 425 ft (129.5 m) long with a longest span of 165 ft (50.3 m) and a deck 55 ft wide.

Who owns SR 79 NB over SR 0019?

It is owned by the State Highway Agency.